15 Biggest Sunscreen Mistakes

Common ways you're screwing up sunscreen, and how to truly protect yourself from the sun.

Credit: Getty Images

1 of 17

SPF smarts

by Sarah Z. Wexler

By now, you probably know that you should use sunscreen every day both to help reduce your risk of skin cancer and to prevent pesky wrinkles, dark spots, and other signs of premature aging. Yet even people who do slather it on religiously make potentially dangerous mistakes. Here are the most common ways you're messing up with sunscreenand how to truly protect yourself from UV rays.